Chromosomal polymorphism in Steindachneridion melanodermatum Garavello, 2005 (Siluriformes, Pimelodidae): a reappraisal the existence of sex chromosome system in the species

Chromosomal polymorphism in Steindachneridion melanodermatum Garavello, 2005 (Siluriformes,... Fifty-five specimens of Steindachneridion melanodermatum were analyzed using molecular and conventional cytogenetic tools. Two polymorphisms were found: one involving the length of nucleolar organizer regions and another involving two submetacentric chromosomes previously identified as sex chromosomes. The polymorphism was confirmed by homogeneity between male and female karyotypes. Nucleotide sequencing and physical chromosome mapping were also used to identify and characterize one class of repetitive DNA, named SmAluI-Rex3. Based on the results and literature the present study offers an update of the occurrence of sex chromosome system in this species. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Reviews in Fish Biology and Fisheries Springer Journals

Chromosomal polymorphism in Steindachneridion melanodermatum Garavello, 2005 (Siluriformes, Pimelodidae): a reappraisal the existence of sex chromosome system in the species

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Publisher
Springer Netherlands
Copyright
Copyright © 2011 by Springer Science+Business Media B.V.
Subject
Life Sciences; Zoology; Freshwater & Marine Ecology
ISSN
0960-3166
eISSN
1573-5184
D.O.I.
10.1007/s11160-011-9201-2
Publisher site
See Article on Publisher Site

References

  • An uncommon condition for a sex chromosome system in Characidae fish. Distribution and differentiation of ZZ/ZW system in Triportheus
    Artoni, RF; Falcão, JN; Moreira-Filho, O; Bertollo, LAC
  • The X1X2Y sex chromosome system in the fish Hoplias malabaricus. II. Meiotic analyses
    Bertollo, LAC; Mestriner, CA
  • An XX/XY sex chromosome system in a fish species, Hoplias malabaricus, with a polymorphic NOR-bearing X chromosome
    Born, GG; Bertollo, LAC
  • Chromosomal localization of 5S rDNA genes in Leporinus fish (Anostomidae, Characiformes)
    Martins, C; Galetti, PM

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